Patents by Inventor Yasukazu Nagato

Yasukazu Nagato has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Inhibitor of anticancer drug side effect
    Publication number: 20060041019
    Abstract: An object of the present invention is to provide a novel agent for suppressing side effects of an antitumor agent, which can suppress side effects caused by the use of an antitumor agent, such as hair loss. The present invention provides an agent for suppressing side effects of an antitumor agent which comprises a mixture of cyclic and/or straight chain poly lactic acids having a condensation degree of 3 to 20.
    Type: Application
    Filed: June 12, 2003
    Publication date: February 23, 2006
    Inventors: Yasukazu Nagato, Masahiro Murakami
  • Antitumor agent containing lactic acid oligomer mixture
    Publication number: 20050107464
    Abstract: An object of the present invention is to provide a novel antitumor agent by evaluating the antitumor effect obtained by a mixture of polylactic acids which is produced by polymerizing lactides in the presence of certain amine compound. The present invention provides an antitumor agent which comprises a mixture of linear and cyclic lactic acid oligomers represented by the following formula (1) or (2): wherein m represents an integer of 1 to 30, and n represents an integer of 1 to 30, which is produced by polymerizing lactides in the presence of a compound represented by the following formula (3): Me—N(R1)(R2)??(3) wherein Me represents an alkali metal, and each of R1 and R2 independently represents an aliphatic group or aromatic group.
    Type: Application
    Filed: November 5, 2002
    Publication date: May 19, 2005
    Inventors: Yasukazu Nagato, Shigeo Takada, Chieko Murayama, Mikio Watanabe, Masahiro Murakami
  • Antitumor agent containing cyclic polylactic acid
    Publication number: 20040258657
    Abstract: An object of the present invention is to provide a novel antitumor agent by evaluating the antitumor effect which is expressed by a mixture of polylactic acids which contains cyclic polylactic acids as main component. The present invention provides an antitumor agent which comprises a mixture of polylactic acids which contains cyclic polylactic acids having a condensation degree ranging from 3 to 20 as main component.
    Type: Application
    Filed: July 12, 2004
    Publication date: December 23, 2004
    Inventors: Mikio Watanabe, Yasukazu Nagato, Chieko Murayama, Masahiro Murakami, Shigeo Takada
  • Anti-stress agents
    Publication number: 20040116520
    Abstract: The object of the present invention is to provide a novel antistress agent which can be used for suppressing stress. According to the present invention, there is provided an antistress agent which comprises a mixture of cyclic and/or straight chain poly lactic acids having a condensation degree of 3 to 20.
    Type: Application
    Filed: December 22, 2003
    Publication date: June 17, 2004
    Applicant: AMATO PHARMACEUTICAL PRODUCTS, LTD.
    Inventors: Masahiro Murakami, Shigeo Takada, Yasukazu Nagato, Susumu Okabe
  • Remedies for diabetes
    Patent number: 6734214
    Abstract: The object of the present invention is to provide a medicament for prevention and/or treatment of diabetes or diabetes complications, which has an action of reducing the blood sugar level. The present invention provides a medicament for prevention and/or treatment of diabetes or diabetes complications which comprises, as an active ingredient, a mixture of cyclic and/or straight chain poly lactic acids having a condensation degree of 3 to 19.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: May 11, 2004
    Assignee: Amato Pharmaceutical Products, Ltd.
    Inventors: Shigeo Takada, Yasukazu Nagato, Masahiro Murakami